The IB ACIO Grade II mock test on SarkariExam.Center replicates the exact Intelligence Bureau Assistant Central Intelligence Officer Tier 1 exam pattern: 100 MCQs across 5 sections in 60 minutes, with 0.25 negative marking per wrong answer and 1 mark per correct answer. No sectional time limit applies. Start free now, no login required.
IB ACIO Grade II Tier 1 Exam Pattern
The Ministry of Home Affairs conducts the IB ACIO Grade II Tier 1 as a Computer-Based Test with 100 objective-type questions divided equally across 5 sections. All sections run within a single composite timer of 60 minutes.
| Component | Details |
|---|---|
| Total Questions | 100 MCQs |
| Total Marks | 100 marks (1 mark per question) |
| Exam Duration | 60 minutes (composite, no sectional limit) |
| Sections | 5 sections of 20 questions each |
| Negative Marking | 0.25 marks deducted per wrong answer |
| Exam Mode | Computer-Based Test (CBT) |
| Language | English and Hindi (bilingual) |
| Conducted By | Intelligence Bureau, Ministry of Home Affairs |
Negative Marking Rule: How to Manage 0.25 Deduction
4 wrong answers cancel exactly 1 correct answer under the IB ACIO 0.25 negative marking rule. This makes selective skipping more valuable than blind guessing. Use this decision framework in every mock test session:
- Confidence above 70%: Attempt without hesitation; expected score remains positive
- Confidence between 50% and 70% after eliminating 2 options: Attempt with calculated risk
- Confidence below 50%: Skip; the expected value from random guessing is negative
- Target attempt rate: 80 to 90 questions with 75% accuracy to score above 65 marks
Section-Wise Topic Coverage in IB ACIO Grade II Mock Test
Each of the 5 sections in IB ACIO Grade II Tier 1 carries 20 questions for 20 marks. No section has a separate time limit, so managing 60 minutes across all 5 sections determines your score more than topic knowledge alone.
| Section | Questions | Marks | Recommended Time | Key Topics |
|---|---|---|---|---|
| Current Affairs | 20 | 20 | 10 minutes | National events, international affairs, appointments, awards, sports, government schemes |
| General Studies | 20 | 20 | 12 minutes | Indian history, polity, geography, economics, general science (Class 10 level) |
| Numerical Aptitude | 20 | 20 | 16 minutes | Percentage, profit-loss, ratio, time-work, time-distance, data interpretation |
| Reasoning and Logical Aptitude | 20 | 20 | 14 minutes | Analogy, series, coding-decoding, blood relations, syllogism, non-verbal reasoning |
| English Language | 20 | 20 | 8 minutes | Grammar, vocabulary, comprehension, sentence correction, error detection |
| Total | 100 | 100 | 60 minutes |
Section-by-Section: What Each IB ACIO Grade II Tier 1 Section Tests
Each section tests a distinct skill set that the Intelligence Bureau uses to assess candidate suitability for ACIO Grade II roles. Prepare each section with its own strategy.
Current Affairs (20 Questions)
Current Affairs questions come from national and international events of the last 6 to 12 months before the exam date. Frequently tested sub-topics include:
- National news: Government policies, legislation passed, new schemes launched
- International affairs: Summits, bilateral agreements, UN resolutions, and global conflicts
- Awards and honours: Padma awards, Bharat Ratna, Nobel Prize, and Sahitya Akademi winners
- Sports: Major tournament results, Indian performance at Olympics and Commonwealth Games
- Appointments: Chief Justices, RBI Governor, state governors, and Union Ministers
- Science and technology: ISRO missions, defence acquisitions, and space developments
General Studies (20 Questions)
General Studies covers Class 10 level knowledge across history, polity, geography, economics, and science. Focus areas by sub-topic:
- Indian History: Ancient civilisations, medieval kingdoms, and the freedom struggle from 1857 to 1947
- Polity: Constitutional provisions, Fundamental Rights, Directive Principles, Parliament structure, and important amendments
- Geography: Indian physical geography, river systems, soil types, minerals, and climate patterns
- Economics: Budget concepts, Five Year Plans, banking system, GDP, inflation, and poverty measures
- General Science: Basic Physics (motion, force, electricity), Chemistry (elements, acids-bases, chemical reactions), and Biology (human body systems, diseases, plant biology)
Numerical Aptitude (20 Questions)
Numerical Aptitude in IB ACIO Tier 1 tests arithmetic and data interpretation at Class 10 mathematics level. High-frequency topics include:
- Percentage and its applications in profit-loss and discount problems
- Simple interest and compound interest calculations
- Ratio, proportion, and mixture problems
- Time and work, time and distance
- Number systems: HCF, LCM, divisibility rules
- Data interpretation: bar graphs, pie charts, line graphs, and tables (carries 5 to 8 questions per paper)
Reasoning and Logical Aptitude (20 Questions)
Reasoning covers verbal reasoning, non-verbal reasoning, and logical deduction across 20 questions. Topic-wise distribution:
- Verbal reasoning: Analogy, classification, series completion, coding-decoding, blood relations, direction and distance
- Non-verbal reasoning: Pattern recognition, figure completion, mirror image, water image, paper folding and cutting
- Logical reasoning: Syllogisms, statements and assumptions, statements and conclusions, cause and effect
English Language (20 Questions)
English Language is the fastest section in IB ACIO Tier 1 and rewards candidates who read English newspapers daily. Tested topics include:
- Grammar: Tenses, active-passive voice, direct-indirect speech, articles, prepositions, subject-verb agreement
- Vocabulary: Synonyms, antonyms, one-word substitution, idioms and phrases
- Comprehension: Reading passages with questions on stated facts and implied meanings
- Error detection and sentence correction: Identify grammatical errors or improve given sentences
IB ACIO Grade II Selection Process: All 3 Tiers
The Intelligence Bureau selects ACIO Grade II officers through a 3-tier process. The Tier 1 mock test prepares you for the first and most competitive elimination stage.
Tier 1: Objective CBT (100 Marks)
Tier 1 is the qualifying screening round where IB ACIO Grade II mock test practice delivers the highest return on preparation time. Cut-off marks vary per recruitment cycle based on difficulty and total vacancies. Target 70+ marks to remain safely above expected cut-offs across all categories.
Tier 2: Descriptive Written Exam (50 Marks)
Tier 2 tests writing ability through 3 components in 60 minutes. Essay writing carries 20 marks, English comprehension carries 10 marks, and 2 long-answer questions on current affairs or socio-political issues carry 10 marks each. Minimum qualifying marks are 33% (approximately 17 out of 50).
Tier 3: Personal Interview (100 Marks)
The interview panel evaluates personality, communication clarity, awareness, and suitability for intelligence work. Some candidates also face a psychometric or aptitude test as part of the interview process. Final merit uses Tier 1 + Tier 2 + Tier 3 combined scores.
Score Target and Accuracy Plan for IB ACIO Grade II Tier 1
Target 72 to 78 marks in IB ACIO Grade II mock tests to remain comfortably above the Tier 1 cut-off on actual exam day. This buffer accounts for exam-day pressure and unexpected question difficulty.
Attempt Rate vs Accuracy Calculation
- Attempt 85 questions at 75% accuracy: 63.75 correct, 21.25 wrong, net score = 63.75 minus (21.25 × 0.25) = 58.4 marks
- Attempt 85 questions at 85% accuracy: 72.25 correct, 12.75 wrong, net score = 72.25 minus (12.75 × 0.25) = 69.1 marks
- Attempt 90 questions at 80% accuracy: 72 correct, 18 wrong, net score = 72 minus (18 × 0.25) = 67.5 marks
Improving accuracy from 75% to 85% adds approximately 10 marks without attempting a single extra question. Focus accuracy improvement before attempting more questions per test.
5 Mistakes That Drop IB ACIO Grade II Tier 1 Scores
These specific errors appear consistently across IB ACIO Tier 1 result analyses and each one costs 5 to 10 marks directly.
- Spending 20+ minutes on Numerical Aptitude alone: No sectional limit means candidates overallocate time to difficult arithmetic questions while leaving Current Affairs and English half-attempted; allocate a maximum of 16 minutes to Numerical Aptitude regardless of difficulty
- Random guessing under time pressure in the last 5 minutes: Guessing 10 questions at random under the 0.25 rule produces an expected loss of 1.25 marks net; skip those questions and protect your existing score
- Neglecting Current Affairs preparation: Current Affairs carries 20 marks and rewards daily reading; candidates who skip it during preparation consistently fall 15 to 20 marks below candidates who read news daily for 30 days before the exam
- Attempting mock tests without post-test review: Attempting 20 tests without analysing wrong answers builds the same error patterns repeatedly; spend 30 minutes reviewing every wrong answer immediately after each mock test submission
- Practising only full-length tests without section-specific drilling: Reasoning and Numerical Aptitude weak spots require isolated section practice before full-test integration; candidates who skip section tests before full tests plateau at the same score across multiple attempts
IB ACIO Grade II Mock Test Practice Plan: 21 Days
This plan builds section accuracy in Week 1, full-test speed in Week 2, and exam-condition simulation in Week 3.
Week 1: Section Accuracy (Days 1 to 7)
- Days 1 to 2: Reasoning section tests (20 questions each); target 75% accuracy; review all wrong answers the same evening
- Days 3 to 4: Numerical Aptitude section tests; focus on data interpretation and percentage-based arithmetic; target 65% accuracy
- Days 5 to 6: General Studies section tests on Indian polity, history, and science; target 70% accuracy
- Day 7: First full 100-question IB ACIO Grade II mock test under strict 60-minute timer; record section-wise score and accuracy
Week 2: Full Test Speed (Days 8 to 14)
- Attempt 1 full mock test every alternate day; review all wrong answers on the days between tests
- Track time spent per section after each submission; cut Numerical Aptitude time to 16 minutes maximum
- Target by Day 14: Consistent score above 60 marks with attempt rate above 82 questions
Week 3: Exam Simulation (Days 15 to 21)
- Attempt all mock tests at the same time slot as your actual exam appointment
- After each test: review wrong answers, update your accuracy log per section, and revise 2 weakest topic areas the next day
- Target by Day 21: Consistent score above 70 marks with 80%+ accuracy on attempted questions
IB ACIO Grade II Mock Test: Frequently Asked Questions
The IB ACIO Grade II Tier 1 CBT has 100 MCQs worth 100 marks to be completed in 60 minutes. The exam has 5 sections of 20 questions each: Current Affairs, General Studies, Numerical Aptitude, Reasoning, and English Language. There is no sectional time limit; all 100 questions share one 60-minute composite timer.
Each wrong answer deducts 0.25 marks in IB ACIO Grade II Tier 1. Four wrong answers cancel the marks of 1 correct answer. Unattempted questions score zero with no penalty. Practice selective skipping in mock tests to build the habit of avoiding low-confidence guesses before your actual exam.
IB ACIO Grade II selection runs across 3 tiers: Tier 1 CBT (100 marks), Tier 2 Descriptive Exam (50 marks), and Tier 3 Personal Interview (100 marks). The final merit list uses the combined score from all 3 tiers. Tier 1 is the competitive elimination stage where the majority of candidates are screened out before Tier 2.
Target 72 to 78 marks consistently in IB ACIO Grade II Tier 1 mock tests to remain safely above the expected cut-off on actual exam day. General category cut-offs typically range from 60 to 72 marks depending on the recruitment cycle difficulty. Consistent mock test scores above 72 provide a safety buffer that accounts for exam-day pressure and unexpected difficulty levels.
Attempt at least 15 full-length IB ACIO Grade II mock tests before your actual Tier 1 exam date. Start with section-wise tests for the first 7 days to build accuracy per topic, then shift to full 100-question tests from Day 8 onward. Space full tests 2 to 3 days apart and use the gap days to review wrong answers and revise weak topics identified in each test submission.
